Lining of main, transportation, tilting troughs, and shelters
KERALIT offers a variety of solutions for the main chutes lining, depending on the following factors:
In addition to monolithic lining, KERALIT offers well-tried solutions using vibrocast products for the working lining layer. As compared to monolithic lining, the blocks have the following advantages:
The conventional scheme of the working lining layer of a tilting trough is monolithic. To enhance the resistance of the working lining layer, KERALIT offers to use molded blocks, or scrap slabs.
The working layer of the shelter lining is made of refractory concretes. Selection of a brand of a refractory concrete depends on the shelter operating conditions.
Vibrocast products, ready for installation::
Purpose: enhances strength of the working lining layer
It is necessary for holding refractory concretes. The anchor design selection depends on the design of the lining, operating conditions, and used welding equipment.
Performance of repair and maintenance operations
For cost minimization for the chute maintenance and failure-free operation, it is highly recommended to provide timely maintenance and repairs of blast furnace chutes.
The following types of repairs are usually performed:
Additional casting repair
First, the additional casting is provided for the bottom, and then metal sheets are exposed with additional casting to the walls.
Medium-dry mortaring repair
The maximum lining wear places are normally subject to mortaring.
Ramming is provided in layers, no more than 50 mm thick.
Maintenance Diagram is an important operating procedure considering the plant's tap hole opening diagram and shift-working arrangements.
In case any changes to the Maintenance Diagram are required, for example, due to using more advanced present-day materials, KERALIT renders maintenance diagrams development services in accordance with altered operating conditions, implying direct participation of the customer's representatives.
During the period of performance of refractory-line works, if required, KERALIT may provide special-purpose equipment, namely as follows: